A flaw was found in Netty's HTTP/2 HpackEncoder. A remote attacker can exploit this by sending HTTP/2 SETTINGS frames with a very large MAX_HEADER_TABLE_SIZE. This causes the HpackEncoder to store an excessive number of unique headers, leading to increased CPU usage and memory consumption, ultimately resulting in a Denial of Service (DoS).
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Oracle Missing Cpu Oct 2026 | — | Apply the October 2026 Critical Patch Update (CPU) for Oracle Database | Oct 26, 2026 | Sep 18, 2026 |
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